This kind of question comes up a lot. The usual general answer is to use the full number of megapixels that the camera provides. I never use less then what is in the camera and that goes for my DSLR too. Others may have more detailed reasons for shooting with less rather then the full size. I look forward to their rationals.
Travel in RV when not home.
|Path to infinity by Kaye Cee Alolod|
from Your City - Streets with Vanishing Point
|Red Barn by PinoC|
|Gold Light by ecastellon|
from My Best Photo of the Week